Clinical outcomes in patients with achievement of bidirectional block
| CPVI | CPVI+RL | CPVI+PostBox | p Value | |
| Conduction block rate | 52 (100%)* | 42 (80.8%)† | 31 (59.6%)* † | <0.001 |
| ER rate | 11 (21.2%) | 12 (28.6%) | 6 (19.4%) | 0.589 |
| ER rate without AAD | 8 (15.4%) | 10 (23.8%) | 5 (16.1%) | 0.538 |
| ER rate with AAD | 3 (5.8%) | 2 (4.8%) | 1 (3.2%) | 0.871 |
| Patients taking AAD | 18 (34.6%) | 12 (28.6%) | 8 (25.8%) | 0.666 |
| LR rate | 6 (11.5%) | 8 (19.1%) | 6 (19.4%) | 0.978 |
| LR rate without AAD | 5 (9.6%) | 6 (14.3%) | 3 (9.7%) | 0.739 |
| LR rate with AAD | 1 (1.9%) | 2 (4.8%) | 3 (9.7%) | 0.279 |
| Patients taking AAD | 10 (19.2%) | 12 (28.6%) | 6 (19.4%) | 0.500 |
Data are expressed as number (percentages) of patients.
↵* p=0.001, CPVI versus CPVI+RL.
↵† p<0.001, CPVI versus CPVI+PostBox.
AAD, antiarrhythmic drug; CPVI, circumferential pulmonary vein isolation; ER, early recurrence; LR, late recurrence; PostBox, additional RL and posterior inferior line; RL, LA roof line.